Their leadership tenure was during different eras and circumstances. It's non-comparable.
That's true. And, Sonny spent his lifetime apprenticing directly under Vito in his gambling and labor rackets. We don't know what Vincent did while he was working for Zasa.
I think Vincent was less hot-headed than Sonny--a plus. On the other hand, Vincent didn't seem to be very smart.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.